• Diary entry: Write the diary entry in not more than 150 words. • Role play: Divide the class into groups and ask the students to write the dialogues for the play. • Field Trip: Ask the students to complete the activity on page 28. • Presentation/Website: Ask the students to choose a sanctuary of their choice. They can complete the work and display the same in class. • Poster making: Ask the students to complete the activity on page 28. • Peer and self-assessment: Use Distinguish between and the MCQs on page 29 for peer and self-assessment. HOTS The HOTS question can be discussed in class. Life skills Ask the students to read the code of conduct that they have to follow when visiting a wildlife sanctuary. Ask them why they must do so. Value-based question Ask the students to discuss the answers for the value-based question. Follow-up • Find out more about Greenpeace and its activities in India. Join an NGO that is working to save the environment. Answer key for the exercises in the lesson Exercises for Summative Assessment I. Distinguish between: 1. Autotrophs and heterotrophs Autotrophs 1. Organisms which produce their own food are called autotrophs. 2. Refers mainly to plants. 3. They are also known as producers. Heterotrophs 1. Organisms which cannot produce their own food, but directly or indirectly depend on other organisms for food are called hetrotrophs. 2. Refers mainly to animals. 3. They are known as consumers 2. Protected forests and reserved forests Protected forests 1. Protected forests are those forests where all activities like hunting and grazing are allowed unless specific orders are issued by the government. 2. Enjoys protection as is well monitored by the government. 146 Reserved forests 1. Reserved forests are those forests where the rights to all activities like hunting and grazing are banned unless specific orders are issued by the government. 2. Enjoys greater protection than the protected forests. 3. Natural vegetation and wildlife Natural vegetation 1. Natural vegetation refers to the plant life that grows naturally in an area without human intervention. 2. Some of the forest products are timber, lac, resins, herbs, nuts, fuel wood, etc. 3. Deforestation can cause land degradation and loss of habitation for the wildlife of that area. II. Give reasons. 1. Population growth leads to deforestation. Increasing population and spiralling demands for land has led to rapid deforestation all over the world. Forests are primarily cut down to clear land for agriculture, industries, for laying roads, railway lines, etc. People also cut down trees for firewood and for production of paper and synthetic fibres. Forests are also cleared for constructing dams, power projects and other urban developmental projects. 2. Conservation of wildlife is important. Changes in the climatic conditions and human interferences have caused the loss of natural habitats for the plants and animals. Many species have become vulnerable or endangered and some are on the verge of extinction due to hunting of animals and birds. Illegal activities like the poaching of elephants for their tusks, tigers for their hide, etc have to be stopped as this can lead to ecological imbalance. Therefore, it is important to conserve our wildlife. IV. Answer the following. 1. Mention the different uses of forests. Forests play a vital role in the sustenance of life. They are useful to humans in many ways. We get products like timber, resins, herbs, fruits, nuts, gum, fuel wood, etc. from trees in the forests. Trees produce oxygen which all living beings need for breathing. They prevent soil erosion and help conserve soil which is essential for growing crops. They act as shelter belts. The roots of trees enable percolation of water and help increase and recharge underground water. Also, forests moderate temperature and provide moisture through transpiration. Wildlife 1. Wildlife refers to the animal life found in an area that has not been tamed or domesticated by humans. 2. Some of the animal products are hides, fur, ivory, meat, etc. 3. Large scale poaching and hunting can lead to extinction of animal species. 2. List the various factors on which vegetation depends. The distribution and the type of natural vegetation depend on various factors like latitudinal extent, altitude, sunlight, temperature, type of soil and terrain, precipitation, rainfall and the gradient or the slope of the land. But out of all these factors, the two main factors are temperature and moisture. 3. Write a note on deforestation. What steps have the Indian government taken to conserve forests in India? Deforestation is the cutting down of trees to clear the land for agriculture, setting up industries, laying roads and railway lines, etc. Deforestation has resulted in soil erosion on a large scale. It also destroys the wildlife of an area. To conserve forests, the Indian government has set up a number of national parks, wildlife sanctuaries, bird sanctuaries and biosphere reserves. It has implemented stringent rules against smuggling timber, poaching and hunting. The killing of lions, tigers, deer, great Indian bustards and peacocks has been banned and is punishable under law. The government encourages community forestry, supports tree-planting programmes, and celebrates‘Vanmahotsav’. 4. How are animals classified? Wildlife comprises all types of animals like mammals, reptiles, marsupials, etc. Birds and insects are also included in wildlife. Based on their habitat we can classify animals as terrestrial, aquatic and aerial. Based on their food habits animals are classified as herbivores (feed on producers or plants), carnivores (feed on consumers or 147 other animals) and omnivores (feed on both producers and consumers). 5. What is a biosphere-reserve? Highlight its importance. Bio-reserves are specially protected natural areas. They are set up to protect the natural vegetation and wildlife of a place in its pristine form. Bio-reserves are zoned according to the intensity of human activity as the core zone, the buffer zone and the transition zone. The core zone is free from the intervention of humans. The buffer zone serves to protect the core zone from harmful impacts and is used only for forest research. The transition zone contains areas given over to traditional agricultural usage and areas benchmarked for agricultural research. Multiple Choice Questions 1. b 2. a c 8. b 3. c 9. a 4. d 10. b 5. b 6. a 7. Value-based question • The need to protect and care for the environment • The need to be proactive • The need to accept responsibility for the conservation of forests and wildlife Answer key for the worksheet I. 1. national park 2. core zone, buffer zone, transition zone II. 1. c 2. a 3. a and b 4. a 5. c III. 1. False 2. True 3. False 4. True 5. True IV. 1. An increase in the population of a country means there is s greater demand for land. So forest areas are cut to build townships, lay roads and railway tracks. Land is also cleared to build industries. All these activities lead to deforestation. 2. Natural vegetation provides humans with many products such as timber, lac and gum. They produce the much need oxygen which 148 all living things need for breathing. They moderate the temperature of the place and are essential for growing crops. 3. The convention ensures that international trade in wild animals and plant species does not threaten their survival. About 5000 animal species and 25000 plant species are protected. The convention has a list where several species of animals and birds whose trade is prohibited. The convention has made an international agreement between countries.
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